Most places don't allow customers to buy money orders with gift cards. Thankfully, there are a few places that accept gift cards, but there are restrictions.Can you purchase a money order with these cards? Many of the cards have ATM access where you can get cash and deposit to your account but this one does not. Only debit cards or gift cards converted into debit cards with a PIN. Reply. There was a memo from USPS head office to specifically ban gift cards. CheckSmart's got you covered with multiple in-store services! Gift certificates and gift cards are considered to be stored value products for licensing purposes. Money Order Charged Back. Check that the money order amount is correct.